There are two ways to undertake investment in IPO with Upstox online that are pointed out here under
Apply for Upstox IPO with ASBA: This is a net banking-based process wherein clients are allowed to apply for IPO with their respective net banking portal.
Apply for IPO via UPI app: This is a direct process that just requires users to be registered with any UPI app to buy IPO online with Upstox.